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Tina ATina A 

Trailhead Challenge Error TFGLNQMC.

When trying to check the last step in Build Flows with Flow Builder > Build a Simple Flow > Create or Update a Contact in a DE created today,  I received error id: TFGLNQMC. It advised I post in the developer forums.
VinayVinay (Salesforce Developers) 
Hi,

Try in new playground org if you still see issues kindly reach out to trailhead support team.

https://trailhead.salesforce.com/help

Kindly let me know if it helps you and close your query by marking it as solved so that it can help others in the future.

Thanks,
Yehiel ZAFRANY -Yehiel ZAFRANY -
Just had the same error. Tried in a few DE including a brand new one!!User-added image
Yehiel ZAFRANY -Yehiel ZAFRANY -
I did it on a brand new DE.